More likely to be the tight spot than the chainline. Every time you hit the tight spot it'll tend to work the cup and lockring. I take it you have got a lockring on it?
Loctite?
If you can rotate the chainring around a couple of holes it may get rid if the tight spot. Search on here for a couple of threads a while back about adjusting chainrings and chain tension.
More likely to be the tight spot than the chainline. Every time you hit the tight spot it'll tend to work the cup and lockring. I take it you have got a lockring on it?
Loctite?
If you can rotate the chainring around a couple of holes it may get rid if the tight spot. Search on here for a couple of threads a while back about adjusting chainrings and chain tension.